go编程语言中的任何类型和实现泛型列表

package main

import "fmt"

type Any interface{}

type List struct {
    items []Any
}

func (l *List) Add(item Any) {
    l.items = append(l.items, item)
}

func (l *List) Get(index int) Any {
    return l.items[index]
}

func main() {
    list := List{}
    list.Add("hello")
    list.Add(42)
    list.Add(3.14)

    fmt.Println(list.Get(0)) // "hello"
    fmt.Println(list.Get(1)) // 42
    fmt.Println(list.Get(2)) // 3.14
}